Check overflow-fitting.



EVD. CASE.

CHECK OVERFLOW FITTING.

APPLICATION FILED M124, 1912.

Patented Apr. 8, 1913.

WTNESSES NVENTOR ATT NEY in the claims at the end thereof.

EDGAR D. casu, on rLINnMIonreAN.

CHECK OVERELOIM'FITTIN G.

-speoiaation of Letters Patent.

Patented Apr. 8,1913.

Application led January 24, 1912. Serial No. 673,253.

T0 all whom t may concern:

Be it known' that I, EDGAR D. CASE, a

take the overflow of liquid fromthe. bottom of the tank and will maintain the level of the liquid in the tank at any desired depth.

Another object of my invention is to prevent a siphon from formingv at any time.

Another object of my invention is to adapt the use of the overiow to a tank that of the water which melts. from the ice inis cooled by either ice or water.

Another object of my invention is to provide an adjustment therein that will prevent the overflow from being taken from the bottom of the tank at will and to take the overiow from the top of the tank.

Another object of my invention is to provide an adjustment permitting a'double 'use of the tube that drains from the bottom of the tank, so that it can be used either to supply water to the bottom of the tank or take water from the bottom of the tank.

These and other objects of my invention are fully illustrated in the. drawings, described in the specication and pointed out In vthe accompanying drawings, Figure 1 is a cross section of av tank showing my improved drainage tube. Figs. 2 and 3 are details of a stuiing box for packing the joint between the xed tube and the adjustable tube. Fig. 4 sho-ws a section of the tank containing a modication of the drainage tube in which it serves both as a supply tube and Va drainage tube. Fig. 5 is a large detail view of the overflow tting.

In the acco-mpanying drawings like reference numerals indicate like parts.

In the drawings my invention is shown applied to a tank containing one or more series oflpipes submerged in water, brine or -other cooling substance, such as is ordinarily'used for cooling beer and other similar liquids. As indicated ir Fig. -1,' reference numeral l indicates such a tank. v

2 indicates a coil of pipe-extending spirally 'from the top of the tank to the bot-tom and having the -intake 3 through the bottom of the tank and the outlet 4 at the top of the tank, this being" the type of tank that is frequently used in dispensing beer, in which case the pipe 3 would connect; withthe keg of beerin the cellar of a saloon, into which pipe the beer would be forced by air pressure out of the keg of' beer, the beer flowing up through the pipe to the outlet 4 at'the bar. The pipe 2 is made long enough .and with suiiicient cooling surface to cause the beerv to be cooled during its upward -low through the tank, so that it can-be dispensed at the bar at an attractive temperature.

In the summer time the tank 1 will ordinarily be filled with` blockso-f ice clear to the top, the top of the tank being hinged Y or `removableto p'ermit of the additionof ice to the tank. l

It is desirable to ret-ain a certain vamount theA tank, and to drain off the balance.- 4It is also well known that water acquires its greatest density at a temperature--of four tion with the sewer. 'In the top of' 'this' drain pipe is placed the stuing box 6,v by which a tight connection is made' between the adjustable tube 7 and the stationary tube' 6, permitting a vertical adjustment of the tube 7 and maintaining the joint betweenthe tubes 6 and 7 -tight so as to'prevent the leaking of water therethrough.

-i On top of the tube 7 is pl'acedthe stuiling box 8, to the top of which isl connected the check overflow fitting 9. This check overflow fitting is composed of a single 4tube inverted U shaped, having spigot openings with male threads on each end. In the middle of the yoke of the inverted U `and projecting upwardly, is4 the funnel shaped opening 10, communicating directly with the opening which passesthrough the tting. To the end ofthe fitting opposite the tube 7 is connected the-tube 11 wlnch is preferably of metal and rigid, and to the bottom of which is connected a iexible tube or hose 12.

With the vparts assembled as above described andas shown in Fig. 1, the ice can be lled into the tank and the water will accumulate to the level of the bottom of the check overflow fitting 9, after which the water will pass out through the drain tubes 7 and 5 as ra idly as the ice melts. lt will be understo of course that the tank will frequently be piled full of ice, so that the ice extends loosely tromv thebottom of the tank to the top and is not usually. in the ordinary sense of the term :floating in the water in the bottom of the tank. 'After the ice has become melted to a considerable extent, additional ice may be added to the tank, causing the level of` the water to rise. ln this case the water will rise above the Vfunnel opening 10 in the fitting and will flow the purpose of breaking a siphon thatA othe-rfv wise might form after the excess of water had begun to :dow od and which it not broken would drain all 'of the water out'ot the tank. is shown by my apparatus the surplus water will be removed at once and thereatter only the water that is warmest and which has settled tothe bottom of the tank will be removed.

loe is used :tor cooling beer during .the summer time, but in the winter time when hydrant water is suciently cold it is frequently used for the cooling ot the beer instead. ln this case it is desirable to reverse the order of drainage as the warmest water' will then be found at the top of the tank and the coldest-water will be found at the bottom' of the tank. To provide for sucha contingency l.' place' a T 13 in the tube ll, which is connected by thepipe 14e with the water supply pipe l5 connected to the city water mains. l also'place a stop cock lo in the check 4overflow tting 9 which prevents' the water then from risin through the tubev l1 and causes it tox ow ldown vthrough the deX-ible tube 12 tothe bottom of the tank, 'llhe water can then rise in the tank 1' until it reaches the level ot the tunnel opening 10in the top of the overdow tting 9,' into which it can pass, passing down through the tubes 7 and 5 into the vseweroutlet.

, Because ot the sliding connection between the tubes 7 and 5,` the overdow Attin .9 can be placed 'at any desired height, so t at the depth of water retained in the tank to which the cooling pipe is exposed canbe varied at will. ln the summer time a large quantity of ice and a considerable depth of water would be necessary 1n order to insure proper noaa-mae cooling of the beer, due to the tact that the temperature oit the atmosphere is high and that the beer is drawn rapidly, while in the wintertime when water alone is being used and the temperature of the atmosphere is normally low and the quantity of beer drawn is considerably smaller, a lower water level without the use of ice would be sudi cient to lower the temperature of the beer or other liquid that was being passed through the refrigerating coils. The pipe ld may be connected to a separate independent pipe or it may be connected to the pipe through which the water at the bar is-supplied, and which pipe may be a spiral submerged pipe be cooled by its immersion in this same tank.

lf desired a cork with a small air hole may be inserted in the overflow opening when the connections are arranged as shown in Fig. l. This will force practically all the overflow water to be taken from the bottom of the tank and when the level drops to the tting the air will work into the tting through the cork and break the Siphon. lt is also desirable that part orall of the connection ld be made deXible so as to permit vertical adjustment of the fitting when the part-sare arranged as shown in Fig. 4a, as well as when used as shown in ltig. l.

Having thus described my invention, what ll claim as new and patentafble is as follows: l. 'The combination of a tank having a discharge outlet therein, an overdow` dttmg within said tank, said iitting having the shape of an inverted U, the ends thereof projecting downwardly, and a tunnel shaped openin in said fitting projecting upwardly.

2. l` e combination of a tank having a discharge outlet therein, an overdow fitting within. said tank, said -htting having the shape oit' an inverted U, the ends thereof pro' jecting downwardly, and a tunnel shaped opening in said tting projecting upwardly, an ad'ustable member adapted to connect one sie of, said U with the dischargeoutlet of the tank, and a second connection adapted lo extend from said U to the bottom of the tank, said second connection having a denible portion.

3. 'lhe combination in an article ot manufacture ot an overflow fitting for a cooling tank, said tting having the shape ot' an inverted tl, the ends thereof projecting downwardly', and a funnel shaped opening 

